use std::collections::HashSet;

fn main() {
	let mut s = String::new();
	std::io::stdin().read_line(&mut s).ok();
	let mut n: u64 = s.trim().parse().unwrap();
	let mut h = HashSet::new();
	for i in 2.. {
		if i * i > n {
			if n > 1 {
				h.insert(n);
			}
			break;
		}
		while n % i == 0 {
			h.insert(i);
			n /= i
		}
	}
	println!("{}", if h.len() < 3 { "Yes" } else { "No" })
}